{"id":"e29e192f-a808-4b3e-a57b-c4cb0e5565a5","shortId":"HqKpuD","kind":"x402","title":"x402-gated HR document endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated HR document endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com serves an HR document resource (document ID 11) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all settled on the Base network using USDC.\n\nThe specific endpoint `/api/v1/hr/documents/11` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms a flat $0.02/request pricing model across all endpoints, with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no description of what the HR document endpoint actually returns. The endpoint is live (returns a valid x402 402 challenge), but without documentation it is unclear what input the POST body should contain or what the response payload looks like. The \"HR documents\" category is not listed on the homepage's API catalog, making this endpoint's purpose and data content uncertain.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","hr-document-retrieval","json-response"],"categories":["data","documents"],"synonyms":["HR document API","human resources document","paid API endpoint","x402 API","USDC micropayment API","lowpaymentfee","Base network API","document retrieval"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content","No OpenAPI or schema definition for request or response payloads","The /api/v1/hr/documents/ path is not listed in the homepage's API catalog, making its purpose unclear","No information on what 'HR documents' contain or what input is expected in the POST body"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/11","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/hr/documents/11","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no explanation of what this HR document endpoint actually returns. The docs pages are empty. This is effectively a stub 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'/api/v1/hr/documents/11':82 '/docs':148 '/pricing':149 '/readme':152 '/request':125 '0.02':109,124 '000':98 '0x8335':103 '11':40 '20':97 '2913':104 '402':193 '6':114 'Base network API' 'HR document API' 'USDC micropayment API' 'accept':83 'across':128 'actual':183 'advertis':92 'ai/ml':64 'analyt':63 'api':59,133,226 'base':8,22,75,99,106 'base-network' 'behind':41 'bodi':205 'broader':50 'call':58 'catalog':227 'categori':218 'challeng':91,194 'commit':141 'confirm':121 'connect':158 'contain':207 'content':164,235 'cost':95 'crypto':67 'data':62,234 'decim':115 'descript':176 'document':5,19,36,38,143,173,181,197,217 'document retrieval' 'dozen':53 'endpoint':6,20,30,60,81,130,182,186,230 'equal':108 'extrem':145 'financ':66 'flat':123 'gate':3,17 'homepag':224 'hr':4,18,35,180,216 'hr-document-retrieval' 'human resources document' 'id':39 'infer':65 'input':202 'json':88 'json-response' 'key':134 'land':119 'like':214 'limit':137 'list':221 'live':188 'look':213 'lowpaymentfee' 'lowpaymentfee.com':32 'make':228 'maximum':94 'minimum':140 'model':127 'network':76 'offer':52 'openapi':168 'page':120,153 'paid API endpoint' 'part':47 'pay':10,24,56 'pay-per-cal':55 'pay-per-request':9,23 'payload':212 'paywal':44 'per':11,25,57,110 'platform':51,117 'post':84,204 'price':126 'prompt':160 'purpos':232 'rate':136 'render':155 'request':12,26,85,111 'request/response':171 'requir':142 'resourc':37 'respons':211 'return':87,184,189 'schema':172 'serv':33 'servic':70 'settl':72 'span':61 'spars':146 'spec':169 'specif':80 'substant':163 'uncertain':236 'unclear':200 'unit':100 'usdc':14,28,78,102,112 'usdc-settlement' 'use':77,113 'util':69 'valid':191 'wallet':159 'without':196 'x402':2,16,43,90,192 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"01b25076-39bb-47aa-92fc-aeff62caec80","listingId":"e29e192f-a808-4b3e-a57b-c4cb0e5565a5","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/hr/documents/11","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:18.999Z"}],"sources":[{"listingId":"e29e192f-a808-4b3e-a57b-c4cb0e5565a5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/11","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:18.999Z","lastSeenAt":"2026-04-23T22:03:15.623Z"}],"details":{"listingId":"e29e192f-a808-4b3e-a57b-c4cb0e5565a5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/11 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/11"},{"claim":"The platform charges $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/11"}],"useCases":["Retrieving HR-related documents programmatically via pay-per-call","Agent-driven document access without API key management","Micropayment-gated data retrieval on Base L2"],"bestFor":["Agents needing keyless, pay-per-use document access","Developers experimenting with x402 payment protocol","Use cases requiring low-friction USDC micropayments on Base"],"notFor":["Production workflows requiring documented request/response schemas","Bulk document retrieval where per-call pricing is inefficient","Users who need fiat payment options or non-crypto settlement"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:11.271Z"},"updatedAt":"2026-04-23T22:03:15.623Z"}}